Date: Tue, 4 Sep 2001 10:36:08 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Brahma Naidu Golla <gbnaidu@sasken.com> Cc: freebsd-net@FreeBSD.org, sameerbr@sasken.com Subject: Re: Packet capturing at Link Layer... Message-ID: <Pine.BSF.4.21.0109041034260.18360-100000@InterJet.elischer.org> In-Reply-To: <15252.40345.212692.832960@sunk2.sasi.com>
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you can use a netgraph node to filter them feed the ones you DON'T want back into the "upper" hook of the ethernet interface. (I actually have a special node written to do this if I can get a release from Monzoon networks to release it) On Tue, 4 Sep 2001, Brahma Naidu Golla wrote: > Hi, > > I would like to capture certain packets (Based on the Protocol type of > ether header) at the link layer. I dont want the copies of the packets, but > I want the packets to be received by my user land application and not to be > processed by the L3 and L4. Could some body give me some pointers on this? > > One possibility is to use Raw sockets at the link layer. But how do I > specify the protocol type of ether header to filter the packets? > > TIA > --gb > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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